159
FZUS63 KMKX 022001
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
301 PM CDT Sat Aug 2 2025

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan.

Waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.SYNOPSIS...

High pressure around 30.4 inches centered over Wisconsin will
slide across Lake Michigan this weekend and become centered over
Michigan on Sunday after weakening to around 30.1 inches. Light
and variable winds are expected under the high. Look for winds to
become east to southeast early next week as low pressure around
29.9 inches slowly approaches from the Northern Plains.

LMZ261-362-364-366-563-565-567-868-030315-
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and north of a line from Charlevoix MI to South
Fox Island 5 NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to
Mid Lake-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to
Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
301 PM CDT Sat Aug 2 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Southwest winds 10 to 15 kt becoming west. Areas of
smoke. Waves 1 to 2 ft.
.SUNDAY...West winds 5 to 10 kt increasing to 10 to 15 kt late in
the morning, then becoming southwest early in the afternoon
becoming south 10 to 20 kt late. Areas of smoke. Waves 1 ft or
less.
.SUNDAY NIGHT...Southwest winds 10 to 15 kt becoming south late
in the evening, then becoming southeast after midnight becoming
east late. Areas of smoke in the evening. Waves 1 ft or less.
.MONDAY...Southeast winds 5 to 10 kt becoming northeast. Waves
nearly calm.
.MONDAY NIGHT...Northeast winds 10 to 15 kt becoming southeast
5 to 10 kt. Waves 1 ft or less.
.TUESDAY...Southeast winds 10 to 15 kt becoming east. Waves 1 to
2 ft.
.TUESDAY NIGHT...East winds 10 to 15 kt becoming southeast. Waves
1 to 2 ft.
.WEDNESDAY...Southeast winds 10 to 15 kt becoming south. Waves
1 to 2 ft.
.THURSDAY...South winds 10 to 20 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-030315-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5 NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5 NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM
offshore to Mid Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid
Lake-
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
301 PM CDT Sat Aug 2 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Northwest winds 10 to 15 kt becoming north late this
evening, then becoming less than 10 kt after midnight becoming
northeast late. Areas of smoke. Waves 1 to 2 ft.
.SUNDAY...Northeast winds less than 10 kt becoming north 10 to
15 kt. Areas of smoke. Waves 1 ft or less.
.SUNDAY NIGHT...North winds 10 to 15 kt veering to east 5 to
10 kt. Areas of smoke in the evening. Waves 1 ft or less.
.MONDAY...Southeast winds 5 to 10 kt becoming east. Waves 1 ft or
less.
.MONDAY NIGHT...Northeast winds 5 to 10 kt becoming east. Waves
1 to 2 ft.
.TUESDAY...Southeast winds 10 to 15 kt becoming east 5 to 10 kt.
Waves 1 to 2 ft.
.TUESDAY NIGHT...East winds 5 to 10 kt becoming southeast 10 to
15 kt. Waves 1 to 2 ft.
.WEDNESDAY...Southeast winds 10 to 15 kt becoming south. Waves
1 to 2 ft.
.THURSDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.

$$

LMZ761-030315-
MAFOR 0222/
MICHIGAN NORTH 12510 14600 11610 11510. Waves 2 feet or less.

MICHIGAN SOUTH 11710 11700 11800 14100 11810. Waves 1 foot or
less.

$$


Cronce

Experimental modernized open lake forecast is available online at
weather.gov/mkx/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes